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Pa'vtented'lan. 18, |881.

VW.' R.V BARTON. Edge Iron.

(Model.)

UNITED STATES PATENT OFFICE.

WILLIAM It. BARTON, OF BRIDGEWATER, MASSACHUSETTS, ASSIGNOR OF ONE-HALFTO-GEOBGEO. HAMMOND, OF CENTRAL FALLS, B. I.

EDGE-IRON.

SPECIFICATION formingpart of Letters Patent No. 236,760, dated January 18, 1881.

Application led November 24, 1880. (Model.)

To all whom it may concern Be it known that I, WILLIAM R. BARTON, a citizen o"` the United States, residing at Bridgewater, in the county of Plymouth and State of Massachusetts, have invented new and useful Improvements in Edge-Irons, of which the following is a speciication.

This invention relates to a tool for burnishing the edges of boot and shoe soles after they havebeen planed,'its object being to give to such a tool an adjustable burnishing-surface,

the extent of which may be readily arranged to correspond to the plane which has been previously used, and to obviate inconvenience in handling on account ot' heat from the burnishing-block.

My improved edge-iron is designed, especially, for use in connection with an improved edge-plane, using bits of various widths, for which I have filed an application for patent bearing even date with this.

In the accompanying drawings, Figure 1 is a front view, Fig.,2 an outer-edge view, Fig. 3 a rear view, and Fig. 4 an inner-edge view, of my improved edge-iron. Fig. 5 is a perspective view of the burnishing-block, its holder and adjustable guard detached. Fig. 6 is an outer-edge view of the tool, illustrating a modified construction of the same.

The letter A indicates the handle; B, the burnishing-block, and O its holder, which is composed of the broad guard-arm d, narrow holding-arm e, and the connecting-platef, fromA which projects a suitable shank to lit in a socket in the handle. The burnishing-block tapers toward its top on two sides, and its other sides fit between the guard-arm d and holding-arm e, the 4latter fitting in a groove, g, formed in said block, which is secured to the arm, by means of a screw, h, passing through a hole in the arm and into the block. The block is of such thickness that its opposite side does not touch the guard-arm when secured to the holding-arm, nor does its top touch the plate j', so that there is a free passage of air in one sideA and over the topof the block, to prevent heat from being communicated to said guide-arm and plate f.

The burnishing-face b ofthe block B terminates ato'ne end in a Iiange, b', which should be similar in shape Vtothe flange of the plane used in nishin g, andthe other orV guard an ge, fi, is adjustable, and is provided with a slotted lug, k, projecting at about a right angle, and

extending laterally to fit upon a shoulder, l, formed on the block, and upon which it is adjustable, a suitable screw passing through the slot in the lug and into the block serving to hold guard-flange in position.

Upon the rear surface of the block B is inscribed a scale, m, the graduations of which correspond to the widths of the cutting-edges of planing-tools, and enable the dan ge t' to be so adjusted that the burnishing-face of the edge-iron will properly follow the edge planed by a given-sized plane or bit.

In the modification shown in Fig. 6 a recess, n, is formed longitudinally in the top of the block to permit the passage of air, which prevents any undue communication of heat to the plate j' and the guard-arm, against which the lower portion of the operators hand rests.

The burnishiug-block, being separable, can be heated and secured in its holder without trouble.

What I claim is- 1. The holder C, constructed with the broad imperforate guard-arm d, narrow holding-arm e, and connecting-plate f, in combination with the burnishing-tool, detachably secured at one side to the holding-arm, and disconnected and separated from the guard-arm at the opposite side to provide an air-space, all substantially as shown and described.

2. The combination, with the detachable burnishing-block having the tia-nge b at one end, of the guard-liange t', extending across the face of the burnishing-block, and constructed with the laterally projecting slotted lug lc, bearing upon one side of said block, and adjustably connected thereto by a set-screw, substantially as described.

3. The combination,with the holder C, having the holding-arm e, and the burnishingblock, having the vertical side groove, g, in which said holding-arm is secured, and provided with the side shoulder, l, of the guardarm i, extending across the face of the burnishing-block, and provided with a laterallyprojecting slotted arm, k, resting on the shoulder l, and adjustably secured in position, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

Witnesses: WILLIAM RANDAL BARTON.

RICHMOND A. BARToN, WILLIAM E. BARTON.

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